What is a pattern of evolution that conforms to the 'plus ca change' model?

Answer 1

does it have to ? :D

I have a vision. your teacher bothered
you with a certain biography of a. huxley ?

well anyway - one pattern could be,
the trunk of an elephante seems unlike
but it is still a NOSE - the more things
change the more things stay the same.

the giraffe has exactly the same amount
of chains in her long neck as we in short.

can change extremely: ovaries or testicles yet
they got their origins in the same stemcell type ...